Compass on base



FIG. 1 is a top view of a compass on a transparent base according to my new ornamental design;

FIG. 2 is a bottom view of the compass on base shown in FIG. 1;

FIG. 3 is a front view of the compass on base shown in FIG. 1;

FIG. 4 is a rear view of the compass on base shown in FIG. 1;

FIG. 5 is a right side view of the compass on base shown in FIG. 1;

FIG. 6 is a left side view of the compass on base shown in FIG. 1; and,

FIG. 7 is a perspective view of the top, right side and rear of the compass on base shown in FIG. 1. 

CLAIM The ornamental design for a compass on base, as shown and described. 